Touch panel and electromagnetic capacitance touch device

Abstract

The invention relates to a touch panel and an electromagnetic capacitive touch device. The touch panel comprises a first touch electrode layer and a second touch electrode layer. The first touch electrode layer comprises a plurality of first grid channels formed by arranging a plurality of first grid lines in a crossed mode. The first grid channel comprises two sub-grid channels arranged adjacently and a first gap. And a plurality of grid reinforcing parts are arranged in at least the sub-grid channels in the first touch electrode layer. The second touch electrode layer and the first touch electrode layer are stacked in an insulating manner. The second touch electrode layer comprises a plurality of second grid channels formed by arranging a plurality of second grid lines in a crossed mode. The second touch electrode layer is provided with a plurality of grid missing parts. The space projection positions of at least part of the grid missing part and at least part of the grid reinforcing part in the thickness direction correspond to each other. According to the touch panel, electromagnetic touch control and capacitive touch control can be achieved easily, and the touch control performance and the appearance performance of the touch panel can be improved easily.

Description

Technical Field

[0001] This application relates to the field of touch technology, and in particular to touch panels and electromagnetic capacitive touch devices. Background Technology

[0002] Touch technology basically includes capacitive touch and electromagnetic touch. Specifically, capacitive touch uses the change in capacitance value due to the human body's electrical current to locate the touch point. Capacitive touch can be triggered by any conductive object, such as a finger or a stylus. Electromagnetic touch, on the other hand, emits electromagnetic touch signals, which are received by a sensor and the position is calculated. Electromagnetic touch can be triggered by emitting electromagnetic signals through a conductive material, such as an electromagnetic pen.

[0003] Currently, products with touch technology are still designed separately from those with capacitive touch and those with electromagnetic touch. That is, products with capacitive touch cannot be directly electromagnetically touched, and products with electromagnetic touch cannot be directly capacitively touched, which is not conducive to enriching the functions of touch panels.

[0004] In related technologies, some manufacturers integrate capacitive touch and electromagnetic touch functions. However, these products achieve a thinner touch panel by placing the capacitive touch electrodes and electromagnetic touch electrodes on the same substrate in the same layer.

[0005] However, the products in the related technologies have the following drawbacks: the capacitive touch electrodes and electromagnetic touch electrodes are set on the same layer, which not only limits the layout space of the touch panel, resulting in a narrower electrode layout and further affecting the touch performance, but also increases the number of surrounding lines, resulting in a wider bezel of the touch panel. Summary of the Invention

[0006] Therefore, it is necessary to provide a touch panel and an electromagnetic capacitive touch device to address the issues that affect touch performance and touch size when capacitive and electromagnetic touch are integrated.

[0007] A touch panel, the touch panel comprising:

[0008] A first touch electrode layer includes a plurality of first grid channels formed by the intersection of multiple first grid lines; each first grid channel includes two adjacent sub-grid channels and a first gap; the two sub-grid channels are spaced apart by the first gap, and one end of the two sub-grid channels on the same side is electrically connected; at least one of the sub-grid channels in the first touch electrode layer is provided with a plurality of grid reinforcement portions;

[0009] A second touch electrode layer is provided, with an insulating layer stacked between the second touch electrode layer and the first touch electrode layer; the second touch electrode layer includes a plurality of second grid channels formed by the intersection of multiple second grid lines; the second touch electrode layer is provided with a plurality of grid gaps;

[0010] The spatial projection positions of at least a portion of the missing mesh portion and at least a portion of the reinforced mesh portion correspond along the thickness direction of the first touch electrode layer.

[0011] An electromagnetic capacitive touch device includes a processing component and a touch panel as described in the above embodiments. The processing component is electrically connected to a first grid channel of a first touch electrode layer and a second grid channel of a second touch electrode layer, respectively. The first grid channel and the second grid channel are shared channels for electromagnetic touch and capacitive touch.

[0012] The aforementioned touch panel and electromagnetic capacitive touch device, through the integrated design of the first and second touch electrode layers, integrate a channel shared by both electromagnetic and capacitive touch functions. This allows users to select different touch methods according to different needs, greatly improving the practicality and flexibility of the touch panel. Furthermore, unlike capacitive and electromagnetic touch channels which are arranged on the same layer and spaced apart, the integrated design of the first and second touch electrode layers helps reduce the number of channels and leads, effectively mitigating the limitations of electrode layout within the touch panel. This reduces the impact on touch performance, achieving superior electromagnetic capacitive touch performance, while also minimizing the impact on touch panel size, facilitating a narrower bezel width.

[0013] Furthermore, in the channel shared by both electromagnetic and capacitive touch functions, the first grid channel of the first touch electrode layer forms a loop through two sub-grid channels electrically connected at one end, and the second grid channel of the second touch electrode layer forms a loop through leads at both ends. The loops of the first and second touch electrode layers overlap each other, thereby realizing the sharing of capacitive and electromagnetic touch functions. The first touch electrode layer is provided with a grid reinforcement section to reduce the impedance of the first grid channel, and the second touch electrode layer is provided with a grid gap section to avoid the impact of the grid reinforcement section on the appearance after grid overlap. In this way, the impedance requirements of electromagnetic and capacitive touch can be met without increasing the channel width, especially with the channel width of capacitive touch, and the overall appearance will not be affected. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an electromagnetic capacitive touch device in one embodiment.

[0015] Figure 2 for Figure 1A schematic diagram of the cooperative structure of the first grid channel and the second grid channel in the electromagnetic capacitive touch device.

[0016] Figure 3 This is a schematic diagram of the structure of an electromagnetic capacitive touch device in one embodiment, wherein the first grid channel is provided with a grid reinforcement section.

[0017] Figure 4 This is a schematic diagram of the structure of an electromagnetic capacitive touch device in one embodiment, showing a second grid channel with a grid gap.

[0018] Figure 5 This is a schematic diagram of the structure of the missing mesh portion of the second mesh channel in an electromagnetic capacitive touch device shown in another embodiment.

[0019] Figure 6 for Figure 5 The diagram shows the cooperative structure of the mesh missing part and the mesh reinforcement part in the electromagnetic capacitive touch device shown.

[0020] Figure 7 This is a schematic diagram of the structure of the mesh reinforcement section in the first mesh channel of the electromagnetic capacitive touch device shown in other embodiments.

[0021] Figure 8 This is a schematic diagram of the structure of the missing mesh portion in the second mesh channel of the electromagnetic capacitive touch device shown in other embodiments.

[0022] Figure 9 for Figure 7 The mesh reinforcement shown is Figure 8 A schematic diagram of the mating structure of the missing mesh portion.

[0023] Figure 10 This is a schematic diagram of an electromagnetic capacitive touch device in one embodiment, showing a grid-missing portion set in a virtual wiring area.

[0024] Figure 11 This is a schematic diagram of the cooperative structure of the first grid channel and the second grid channel in an electromagnetic capacitive touch device shown in one embodiment.

[0025] Figure 12 This is a schematic diagram of the cooperative structure of the first grid channel and the second grid channel in an electromagnetic capacitive touch device shown in another embodiment.

[0026] Figure 13 This is a schematic diagram of the grid structure in the first grid channel of an electromagnetic capacitive touch device shown in one embodiment.

[0027] Explanation of reference numerals in the attached figures:

[0028] 10. Electromagnetic capacitive touch device; 100. Touch panel; 100a. First connecting edge; 100b. Second connecting edge; 100c. Third connecting edge; 100d. Fourth connecting edge; 110. First touch electrode layer; 110a. First grid line; 110b. Grid reinforcement section; 111. First grid channel; 1111. Sub-grid channel; 1112. First gap; 1113. First lead; 1114. Grid connection area; 1115. 112. Second lead; 120. Second touch electrode layer; 1201. Second grid line; 1202. Grid missing part; 1202a. First missing part; 1202b. Second missing part; 1203. Virtual wiring area; 121. Second grid channel; 122. Third lead; 123. Third gap; 200. Processing component; X. Thickness direction; Y1. First direction; Y2. Second direction; Z1. Third direction; Z2. Fourth direction. Detailed Implementation

[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0030] like Figure 1 as well as Figure 2 As shown, this application provides an electromagnetic capacitive touch device 10, including a touch panel 100 and a processing component 200.

[0031] Specifically, the touch panel 100 includes a first touch electrode layer 110 and a second touch electrode layer 120. The processing component 200 is electrically connected to the first mesh channel 111 of the first touch electrode layer 110 and the second mesh channel 121 of the second touch electrode layer 120, respectively. The first mesh channel 111 and the second mesh channel 121 are shared channels for electromagnetic touch and capacitive touch.

[0032] like Figure 3 and Figure 4 As shown, the first touch electrode layer 110 includes a plurality of first grid channels 111 formed by the intersection of multiple first grid lines 110a. Each first grid channel 111 includes two adjacent sub-grid channels 1111 and a first gap 1112. The two sub-grid channels 1111 are spaced apart by the first gap 1112, and their ends on the same side are electrically connected. At least one sub-grid channel 1111 in the first touch electrode layer 110 contains a plurality of grid reinforcement portions 110b.

[0033] An insulating layer is stacked between the second touch electrode layer 120 and the first touch electrode layer 110. The second touch electrode layer 120 includes a plurality of second grid channels 121 formed by the intersection of multiple second grid lines 1201. The second touch electrode layer 120 is provided with a plurality of grid gaps 1202.

[0034] At least some of the mesh missing portions 1202 and at least some of the mesh reinforcement portions 110b correspond in spatial projection position along the thickness direction X of the first touch electrode layer 110.

[0035] For ease of understanding, the following explanation will be given in conjunction with the driving of the second touch electrode layer 120 and the first touch electrode layer 110 by the processing component 200.

[0036] In one implementation scenario, when the touch panel 100 performs electromagnetic induction touch function, the processing component 200 senses and receives electromagnetic signals emitted by an electromagnetic component (such as an electromagnetic pen) through the first grid channel 111 of the first touch electrode layer 110 and the second grid channel 121 of the second touch electrode layer 120. By calculating and analyzing the intensity and distribution of the electromagnetic signals, the processing component 200 can determine the touch position, pressure, tilt angle, and even button status, thereby achieving high-precision electromagnetic touch function. The electromagnetic pen is divided into an active pen and a passive pen. The active pen is powered by a built-in battery and emits electromagnetic signals, while the passive pen is powered by an external excitation signal and emits electromagnetic signals. The external excitation signal power supply can be achieved by setting a corresponding excitation antenna for the passive pen inside or outside the touch panel 100. The processing component 200 controls the excitation antenna to emit an excitation signal that can power the passive pen, thereby driving the electromagnetic pen to emit electromagnetic signals.

[0037] In another implementation scenario, when the touch panel 100 performs capacitive touch functionality, the processing component 200 detects capacitance changes at each location by sending capacitive drive signals to the grid channels of one of the first touch electrode layers 110 and 120, and receiving sensing signals to the grid channels of the other layer, thereby identifying the touch location. The grid channels within the first touch electrode layer 110 and the second touch electrode layer 120 are typically divided into drive lines (Tx) and sensing lines (Rx), forming intersecting capacitive sensing units. When a finger touches the screen, it capacitively couples with a nearby sensing unit, changing the capacitance value of that unit. The processing component 200 scans all sensing units to precisely detect the minute changes in capacitance of each unit. By analyzing the distribution and intensity of these changes, the coordinates of the touch point are calculated, thus realizing the capacitive touch function.

[0038] The electromagnetic induction touch function and capacitive touch function of the aforementioned touch panel 100 can be driven in a time-division manner. Specifically, the touch panel 100 can achieve the use of different functional scenarios by driving the electromagnetic induction touch function and the capacitive touch function separately. Furthermore, the touch panel 100 can drive the electromagnetic induction touch function and the capacitive touch function in a time-division manner. For example, in one touch driving cycle, the electromagnetic induction touch function is driven first, and then the capacitive touch function is driven. By driving in this cyclical manner, both functions can be used simultaneously.

[0039] Based on this, in this embodiment, through the integrated design of the first touch electrode layer 110 and the second touch electrode layer 120, the touch panel 100 integrates a channel shared by both electromagnetic touch and capacitive touch functions, allowing users to choose different touch methods according to different needs. For example, users can use their fingers for ordinary browsing and operation, while also using an electromagnetic pen for precise drawing or writing, greatly improving the practicality and flexibility of the touch panel 100. Furthermore, unlike capacitive touch and electromagnetic touch channels which are arranged on the same layer and spaced apart, the integrated design of the first touch electrode layer 110 and the second touch electrode layer 120 helps reduce the number of channels and leads, effectively reducing the limitations of electrode layout within the touch panel 100, thereby minimizing the impact on touch performance and achieving superior electromagnetic capacitive touch performance. Simultaneously, it reduces the impact on the size of the touch panel 100, facilitating a narrower bezel width.

[0040] Furthermore, in the channel shared by both electromagnetic and capacitive touch functions, the first grid channel 111 of the first touch electrode layer 110 forms a loop through two sub-grid channels 1111 electrically connected at one end, and the second grid channel 121 of the second touch electrode layer 120 forms a loop through leads at both ends. The loops of the first touch electrode layer 110 and the second touch electrode layer 120 overlap and intersect, thereby achieving the shared use of capacitive and electromagnetic touch functions. The first touch electrode layer 110 is provided with a grid reinforcement portion 110b to reduce the impedance of the first grid channel 111, and the second touch electrode layer 120 is provided with a grid gap portion 1202 to avoid affecting the appearance of the overlapping grid after the grid reinforcement portion 110b is provided. In this way, the impedance requirements of both electromagnetic and capacitive touch can be met without increasing the channel width, especially within the channel width of capacitive touch, and the overall appearance is not affected.

[0041] Furthermore, in the first grid channel 111 of the first touch electrode layer 110, a loop is formed by electrically connecting one end of two sub-grid channels 1111. This increases the feed distance of the first grid channel 111 without increasing its width, thereby increasing its impedance. However, the presence of the grid reinforcement portion 110b in the first grid channel 111 reduces its impedance, thus offsetting the increased impedance due to the increased feed distance and preventing any impact on the touch performance of the first touch electrode layer 110. Simultaneously, the presence of the grid gap portion 1202, corresponding to the grid reinforcement portion 110b, avoids the problem of increased grid visibility caused by incomplete overlap of multiple grid lines when two grid layers overlap, improving the appearance of the touch panel 100.

[0042] The missing mesh portion 1202 refers to a certain empty area on the border of the mesh in the second mesh channel. For example, the number of complete borders in the complete mesh in the second mesh channel can be 4, while the number of complete borders in the mesh with the missing mesh portion 1202 is less than 4, and can be 3, 2, etc.

[0043] Furthermore, the insulation between the first touch electrode layer 110 and the second touch electrode layer 120 can be achieved by making the gap between the first touch electrode layer 110 and the second touch electrode layer 120 sufficiently large to form an insulating gap. Alternatively, it can be achieved by providing a substrate, an insulating layer, or similar material between the first touch electrode layer 110 and the second touch electrode layer 120. This allows the second touch electrode layer 120 and the first touch electrode layer 110 to be insulated, thereby improving the operational stability and reliability of both the second touch electrode layer 120 and the first touch electrode layer 110.

[0044] It should be noted that the number of the aforementioned mesh missing part 1202 and mesh reinforcement part 110b can be one or more. Among them, when there are multiple mesh missing parts 1202 and mesh reinforcement parts 110b, the multiple mesh missing parts 1202 can be set on the same mesh or on different meshes.

[0045] In some embodiments, such as Figure 3 as well as Figure 4 As shown, the second mesh channel has multiple mesh gaps 1202, and the first mesh channel has multiple mesh reinforcements 110b; the mesh reinforcements 110b and the mesh gaps 1202 are arranged in a one-to-one correspondence. In this way, the cooperation of the multiple mesh gaps 1202 and the multiple mesh reinforcements 110b can reduce the impedance of the first touch electrode layer 110 while avoiding the risk of poor appearance.

[0046] In some implementations, see back Figure 3 The mesh reinforcement portion 110b is disposed within the mesh of the first touch electrode layer 110, and the mesh reinforcement portion 110b is connected to at least two sides of the mesh of the first touch electrode layer 110.

[0047] In this way, while effectively reducing the impedance of the first touch electrode layer 110, when an external force is applied, such as bending, the connection between the mesh reinforcement part 110b and the two sides of the mesh can effectively disperse the stress, avoid deformation or damage to the first touch electrode layer 110, ensure the working stability of the first touch electrode layer 110, and further reduce the risk of channel failure.

[0048] Furthermore, such as Figure 4 as well as Figure 5 As shown, the mesh missing portion 1202 is provided on the mesh edge of the second touch electrode layer 120, and the mesh missing portion 1202 is the missing segment of the mesh edge.

[0049] It is understandable that during the manufacturing process of the first touch electrode layer 110 and the second touch electrode layer 120, there may be a certain process deviation in the alignment of the first grid channel and the second grid channel. This will cause the original second grid line 1201 corresponding to the grid missing portion 1202 to be inaccurately aligned with the grid reinforcement portion 110b, preventing the second grid line 1201 and the grid reinforcement portion 110b from completely overlapping. This will result in dense grid lines or thick-line-width overlapping grid lines appearing on the touch panel 100, thus affecting the aesthetic appearance of the touch panel 100. Therefore, by setting the grid of the second touch electrode layer 120 to correspond to the grid missing portion 1202 of the grid reinforcement portion 110b, the aforementioned aesthetic problems can be avoided.

[0050] Optionally, in one embodiment, as Figure 3 , Figure 6 as well as Figure 7 As shown, the mesh reinforcement portion 110b is disposed between two mesh edges that are disposed opposite to or adjacent to each other in at least one mesh. In this way, the connection of the mesh reinforcement portion 110b between the two mesh edges can optimize the current conduction path, so that the current is more evenly distributed throughout the entire touch electrode layer, reducing resistance differences, thereby improving touch sensitivity and response speed.

[0051] It should be noted that the above-mentioned missing mesh portion 1202 can be set on a single mesh or on multiple meshes.

[0052] In one example, the mesh reinforcement 110b can be disposed between two, three, or four mesh edges that are arranged in opposite or adjacent configurations and electrically connected.

[0053] In one embodiment, see back Figure 4 The missing mesh portion 1202 includes a first missing portion 1202a and a second missing portion 1202b, which are respectively disposed on two adjacent connected mesh edges.

[0054] Accordingly, such as Figure 6 As shown, a mesh reinforcement part 110b corresponds to the first missing part 1202a and the second missing part 1202b of the mesh missing part 1202, thus forming a one-to-one correspondence.

[0055] Thus, by setting the first missing portion 1202a and the second missing portion 1202b on two adjacent second grids respectively, while retaining the grid vertices between them, it is ensured that the grid lines in the other intersecting direction will not be broken when passing through the grid vertices, thereby reducing the impact on the impedance of the second touch electrode layer 120. At the same time, it ensures the uniformity of the appearance after the grids are overlapped.

[0056] It should be noted that the two adjacent grids mentioned above can refer to either collinear adjacent grids or concurrent adjacent grids.

[0057] Furthermore, in one embodiment, such as Figure 6 , Figure 7 , Figure 8 as well as Figure 9 As shown, the first missing portion 1202a and the second missing portion 1202b are arranged collinearly or intersectingly at a grid vertex of the second touch electrode layer 120. That is, the two sides of the grid missing portion 1202 are offset from the grid vertex. In this way, it can be ensured that the impedance of the second touch electrode layer 120 is not too low.

[0058] Furthermore, in yet another embodiment, see back Figure 9 The mesh gaps 1202 are at least provided in the second mesh channel 121, and the mesh gaps 1202 in the second mesh channel 121 are staggered. In this way, it can be ensured that there are no continuous mesh gaps 1202 in the second touch electrode layer 120, which greatly reduces the impact on impedance and ensures touch performance.

[0059] In some embodiments, the mesh reinforcement portion 110b and the mesh missing portion 1202 are overlapped or offset along the thickness direction X. In one embodiment, the mesh reinforcement portion 110b and the mesh missing portion 1202 are overlapped along the thickness direction X. In this way, the mesh missing portion 1202 overlaps with the mesh reinforcement portion 110b, avoiding potential appearance problems.

[0060] In another embodiment, such as Figure 6 as well as Figure 9As shown, the mesh reinforcement portion 110b and the mesh missing portion 1202 are offset along the thickness direction X. In this way, the mesh reinforcement portion 110b and the mesh missing portion 1202 do not need to be completely overlapped, and a certain offset can exist, which reduces the alignment difficulty between the mesh reinforcement portion 110b and the mesh missing portion 1202, thereby improving processing efficiency.

[0061] In other embodiments, in the direction perpendicular to the longitudinal extension direction of the second grid channel 121, at most one grid missing portion 1202 is provided on the grid edge in the same vertical direction. Thus, it can be understood that, based on the same number of grid missing portions 1202, if multiple grid missing portions 1202 are sequentially arranged in the direction perpendicular to the longitudinal extension direction of the second grid channel 121, the number of incomplete grid edges in the second grid channel 121 will be greatly increased and greater than 1. This will greatly increase the impedance in the second grid channel 121, affecting touch performance, and will also increase the risk of channel open circuit failure.

[0062] In this embodiment, in the vertical direction of the longitudinal extension direction of the second grid channel 121, at most one grid missing part 1202 is provided on the grid edge in the same vertical direction, so that the second grid channel 121 still maintains a certain degree of redundancy in the vertical direction. Even if there is a grid line break, it will not affect the impedance of the second grid channel 121 too much or have too much impact on the signal transmission direction of the second grid channel 121, thus ensuring the sensitivity and accuracy of capacitive touch.

[0063] In some embodiments, such as Figure 10 As shown, multiple mesh gaps 1202 are disposed in the second mesh channel 121. The area between adjacent second mesh channels 121 is a virtual trace area 1203. The mesh gaps 1202 are also disposed in the virtual trace area 1203, and the multiple mesh gaps 1202 in the virtual trace area 1203 are staggered or continuous. Since the virtual trace area 1203 itself serves as a disconnect and isolation mechanism, the mesh gaps 1202 can be densely arranged, or even continuously arranged. Correspondingly, the mesh reinforcement portions 110b can also be densely arranged, or even continuously arranged, thereby maximizing the use of the virtual trace area to reduce the impedance of the first mesh channel 111 in the first touch electrode layer 110. Simultaneously, the overlapping of the dense or continuous arrangement maintains the morphology of the overlapping mesh, without affecting the appearance.

[0064] In one embodiment, such as Figure 11As shown, the first touch electrode layer 110 is provided with a first lead 1113. The ends of the two sub-mesh channels 1111 on the same side are electrically connected via the first lead 1113. Thus, the first lead 1113 ensures a stable electrical connection between the two sub-mesh channels 1111, allowing signals to be transmitted smoothly between them. Simultaneously, the first lead 1113 also possesses a certain degree of flexibility and tensile strength, capable of adapting to slight deformations that may occur in the touch panel 100 under different usage scenarios. This ensures that even in complex environments, the two sub-mesh channels 1111 maintain a good electrical connection, thereby providing strong support for the precise touch and stable performance of the touch panel 100.

[0065] In another embodiment, such as Figure 12 As shown, the first touch electrode layer 110 has a grid connection area 1114. The ends of the two sub-grid channels 1111 on the same side are electrically connected via the grid connection area 1114. Thus, the grid connection area 1114 has a compact structure, does not occupy excessive space, and helps to achieve a thinner and lighter design for the touch panel 100, improving its overall aesthetics and portability. Furthermore, the presence of the grid connection area 1114 also enhances the anti-interference capability of the touch panel 100, effectively shielding it from external electromagnetic interference, ensuring the accuracy and stability of touch operation, and optimizing the touch experience.

[0066] Similarly, in one embodiment, such as Figure 11 as well as Figure 12 As shown, the first touch electrode layer 110 is provided with a plurality of second leads 1115. The sub-grid channel 1111 extends along its own length direction (i.e., Figure 11 as well as Figure 12 The first end and the second end are provided opposite to each other in the first direction (Y1). The first ends of the two sub-grid channels 1111 on the same side are electrically connected and engaged. The second end is electrically connected to the touch connection area of ​​the touch panel 100 through the second lead 1115.

[0067] Thus, the second lead 1115 can form a loop by leading out from one side, saving a lot of lead layout on the other side, further reducing the size of the bezel, while making the electrical connection more stable, able to withstand a certain degree of bending and stretching, adapting to various deformations that the touch panel 100 may undergo during different uses, and ensuring long-term stable signal transmission.

[0068] In yet another embodiment, such as Figure 11 as well as Figure 12As shown, the second touch electrode layer 120 is provided with a plurality of third leads 122. The two ends of the second mesh channel 121 are respectively connected to the touch connection area of ​​the touch panel 100 via the third leads 122. Similarly, the two ends of the second mesh channel 121 are respectively connected to the touch connection area of ​​the touch panel 100 via the third leads 122, resulting in high stability of the electrical connection, capable of withstanding a certain degree of bending and stretching, adapting to various deformations that may occur in the touch panel 100 during different uses, and ensuring long-term stable signal transmission.

[0069] Alternatively, in one embodiment, see back Figure 2 The channel width of the first grid channel 111 is D1, where D1 = 2mm to 8mm. This channel width D1, between 2mm and 8mm, increases the sensing area of ​​the touch signal and improves its sensitivity. Furthermore, a wider channel width reduces signal loss and interference during transmission, improving signal stability and contributing to the accuracy and reliability of electromagnetic touch.

[0070] In one example, D1 = 3mm~7mm. In another example, D1 can be 3mm, 4mm, 5mm, 6mm, or 7mm, etc. This allows the second grid channel 121 to both increase the sensing area of ​​the touch signal, thereby improving the sensitivity of the touch signal, and reduce signal loss and interference during transmission, thus improving signal stability. It also reduces setup costs.

[0071] Optionally, in one embodiment, the width of the sub-grid channel 1111 can be 1mm to 4mm, and the width of the first gap 1112 can be set according to actual needs. In one example, the first gap 1112 is a row of breaks set on the grid line, and its width can be 8μm to 15μm, that is, the width of the break on the first grid line 110a. In another example, the first gap 1112 is multiple rows of breaks set on the first grid line 110a, and its width is determined by the span of the breaks and the grid size.

[0072] In another embodiment, see back Figure 2 The channel width of the second grid channel 121 is D2, where D2 = 2mm to 8mm. Similarly, a channel width D2 between 2mm and 8mm can increase the sensing area of ​​the touch signal and improve its sensitivity. Furthermore, a wider channel width can reduce signal loss and interference during transmission, improve signal stability, and contribute to enhancing the accuracy and reliability of capacitive touch.

[0073] In one example, D2 = 3mm~7mm. In another example, D2 can be 3mm, 4mm, 5mm, 6mm, or 7mm, etc.

[0074] In some embodiments, such as Figure 13 As shown, the meshes (i.e., metal meshes) of both the second mesh channel 121 and the first mesh channel 111 include a first connecting edge 100a and a second connecting edge 100b. One end of the second connecting edge 100b is connected to one end of the first connecting edge 100a; wherein the included angle between the second connecting edge 100b and the first connecting edge 100a is α, where α = 30°~150°. It can be understood that the size of the included angle affects the mesh density, thereby affecting the mesh aperture ratio. Within this included angle range, the mesh aperture ratio will not be too small, ensuring that the mesh density of the first touch electrode layer 110 and the mesh density of the second touch electrode layer 120 are not too large, thus ensuring that the mesh of the touch panel 100 is not visible.

[0075] Optionally, in one example, α = 60°~120°. In another example, α can be 60°, 75°, 90°, 115° or 120°, etc., without further restrictions.

[0076] Thus, when α = 60°~120°, the size of the grid openings can be further increased, allowing for increased grid channel density, reduced impedance of the first touch electrode layer 110 and the second touch electrode layer 120, and improved touch accuracy. Furthermore, within the included angle range, the included angle between the first connecting edge 100a and the second connecting edge 100b is prevented from being too large, thus avoiding excessively long sides in the metal grid. This improves the design uniformity of the metal grid, facilitates a more uniform electrical signal distribution, reduces touch signal attenuation during transmission, and helps improve the reliability of the touch panel 100.

[0077] See you later Figure 6 The grid within the first grid channel 111 and the second grid channel 121 includes a first connecting edge 100a, a second connecting edge 100b, a third connecting edge 100c, and a fourth connecting edge 100d. The third connecting edge 100c is positioned opposite to the first connecting edge 100a, and the second connecting edge 100b and the fourth connecting edge 100d are connected between the first connecting edge 100a and the third connecting edge 100c, with the second connecting edge 100b and the fourth connecting edge 100d being positioned opposite each other.

[0078] In one embodiment, such as Figure 13 As shown, the spacing between the first connecting edge 100a and the third connecting edge 100c of the grid corresponding to the first grid channel 111 is the first spacing, and the spacing between the second connecting edge 100b and the fourth connecting edge 100d is the second spacing. The first spacing is L1, and the second spacing is L2. In one example, L1 = 100µm~400µm. In another example, L2 = 100µm~400µm.

[0079] In another embodiment, see back Figure 8 The spacing between the first connecting edge 100a and the third connecting edge 100c of the grid corresponding to the second grid channel 121 is the third spacing, and the spacing between the second connecting edge 100b and the fourth connecting edge 100d is the fourth spacing. The third spacing is L3, and the fourth spacing is L4. In one example, L3 = 200µm~800µm. In another example, L4 = 200µm~800µm. This spacing range allows the grid of the first touch electrode layer 110 to cover the grid of the second touch electrode layer 120, thereby reducing the grid density after overlap and ensuring the appearance of the touch panel 100.

[0080] It should be noted that the number of grid channels on the first grid channel 111 and the second grid channel 121 can be one or more, such as two, three, four or five, etc., without much restriction here.

[0081] In conjunction with any embodiment of the second mesh channel 121 described above, such as Figure 1 as well as Figure 5 As shown, the first touch electrode layer has multiple first grid channels 111 and multiple second gaps 112. Each second gap 112 is disposed between two adjacent first grid channels 111, thus spacing the multiple first grid channels 111 apart. The second touch electrode layer has multiple second grid channels 121 and a third gap 123. Each third gap 123 is disposed between two adjacent second grid channels 121, thus spacing the multiple second grid channels 121 apart.

[0082] Thus, by setting up multiple first grid channels 111 and second grid channels 121, the range of electromagnetic touch and the range of capacitive touch can be increased, thereby improving the touch performance of the touch panel 100.

[0083] Furthermore, by setting a second gap 112 between the first grid channels 111, the touch signal can be transmitted stably in the first grid channel 111, reducing mutual interference between signals; similarly, by setting a third gap 123 between the second grid channels 121, the touch signal can be transmitted independently in the second grid channel 121, reducing mutual interference between signals, which helps to improve the sensitivity and accuracy of electromagnetic touch and capacitive touch.

[0084] In some embodiments, the gap widths of the first gap 1112, the second gap 112, and the third gap 123 in the above embodiments can all be equal. Thus, by ensuring that the gap widths of the first gap 1112, the second gap 112, and the third gap 123 are all equal, the difficulty of setting up the touch panel 100 can be reduced, eliminating the need for differentiated processing. It should be noted that the equality of the first gap 1112, the second gap 112, and the third gap 123 can mean either approximately equal or completely equal. Approximately equal means that the gap difference between the three does not exceed a preset processing error.

[0085] In one embodiment, such as Figure 11 As shown, the gap width of the first gap 1112 is T1, the gap width of the second gap 112 is T2, and the gap width of the third gap 123 is T3. In one example, T1 = 1mm~3mm. In another example, T2 = 1mm~3mm. In yet another example, T3 = 1mm~3mm. Thus, this gap width can fully achieve insulation isolation between the first grid channels 111, between the second grid channels 121, and between the sub-grid channels 1111, improving the operational reliability of the touch panel 100.

[0086] Alternatively, in one embodiment, see back Figure 1 as well as Figure 6 Multiple second grid channels 121 are sequentially arranged along the second direction Y2. Multiple first grid channels 111 are sequentially arranged along the first direction Y1. The second direction Y2 and the first direction Y1 are intersected and both are perpendicular to the thickness direction X. Thus, the multiple first grid channels 111 are sequentially arranged along the first direction Y1, forming a set of parallel channels within the first grid channels. The multiple second grid channels 121 are sequentially arranged along the second direction Y2, forming a set of parallel channels within the second grid channels.

[0087] Since the first direction Y1 and the second direction Y2 are intersected and both are perpendicular to the thickness direction X, the first grid channel 111 and the second grid channel 121 form a cross array structure on the plane of the touch panel 100, which can effectively cover the entire surface of the touch panel 100, reduce the blank area not covered by the touch electrodes, and thus improve the touch accuracy.

[0088] In one example, the first direction Y1, the second direction Y2, and the thickness direction X are all perpendicular to each other. Thus, by making the first direction Y1 and the second direction Y2 mutually perpendicular on the plane of the touch panel 100, the multiple first grid channels 111 and the multiple second grid channels 121 form an orthogonal array structure on the plane. This ensures that the touch panel 100 can accurately detect touch signals in both orthogonal directions, improving the horizontal and vertical range distribution of touch signals, increasing the touch interaction range, and enhancing sensitivity.

[0089] In another example, see back Figure 3 as well as Figure 4 As shown, multiple first grid lines 110a are arranged sequentially along the third direction Z1, and the remaining first grid lines 110a are arranged along the fourth direction Z2, so that the multiple first grid lines 110a intersect to form a grid of first grid channels; multiple second grid lines 1201 are arranged sequentially along the third direction Z1, and the remaining second grid lines 1201 are arranged along the fourth direction Z2, so that the multiple second grid lines 1201 intersect to form a grid of second grid channels; wherein, the third direction Z1 and the fourth direction Z2 intersect; and the third direction Z1 and the fourth direction Z2 are not parallel to the second direction Y2, and the third direction Z1 and the fourth direction Z2 are not parallel to the first direction Y1; the third direction Z1 and the fourth direction Z2 are perpendicular to the thickness direction X.

[0090] Thus, since both the first grid line 110a and the second grid line 1201 are arranged in two non-parallel directions (the third direction Z1 and the fourth direction Z2), the touch panel 100 can detect touch signals in multiple directions. Furthermore, the third direction Z1 and the fourth direction Z2 are not parallel to the first direction Y1 and the second direction Y2, which forms a complex grid structure on the touch panel 100. This allows the touch panel 100 to detect touch signals in multiple directions, thereby improving the precision and accuracy of touch and adapting to complex scenarios such as multi-touch and fine operation.

[0091] In some embodiments, the first touch electrode layer 110 and the second touch electrode layer 120 may be disposed on both sides of a substrate or other carrier, or disposed on the same side of a substrate or other carrier and an insulating layer is disposed between the first touch electrode layer 110 and the second touch electrode layer 120, or disposed on one side of different substrates or other carriers and bonded to each other.

[0092] In some embodiments, the touch panel 100 further includes a substrate, and the first touch electrode layer 110 and the second touch electrode layer 120 are disposed on opposite sides of the substrate so that the first touch electrode layer 110 and the second touch electrode layer 120 are insulated from each other by being disposed on opposite sides of the substrate.

[0093] In other embodiments, the touch panel 100 further includes an insulating layer sandwiched between the first touch electrode layer 110 and the second touch electrode layer 120 to achieve insulation stability between the first touch electrode layer 110 and the second touch electrode layer 120. Alternatively, insulating layers can be used to insulate each other; these insulating layers may include organic insulating coatings, silicon nitride, silicon oxide, etc.

[0094] Furthermore, the first touch electrode layer 110 and the second touch electrode layer 120 of the touch panel 100 are conductive layers, which can be electrically connected to the processing component 200 via the first lead 1113. In one example, at least one of a photoresist layer and a catalyst layer is further included between the conductive layer and the substrate, or at least one of a blackening layer and a protective layer is further included above the conductive layer, in order to improve the light emission uniformity of the touch panel 100, reduce grid visibility, and improve touch reliability.

[0095] Optionally, in one embodiment, the conductive layer can be a metal layer, which may be made of materials such as copper or silver.

[0096] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0097] Furthermore, where the terms "second" or "first" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "second" or "first" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0098] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0099] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the first feature indicates that the second and first features are in direct contact, or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the first feature can mean that the second feature is directly above or diagonally above the first feature, or simply indicates that the second feature is at a higher horizontal level than the first feature. Similarly, "below," "under," and "below" the first feature can mean that the second feature is directly below or diagonally below the first feature, or simply indicates that the second feature is at a lower horizontal level than the first feature.

[0100] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0101] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0102] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A touch panel, characterized in that, The touch panel includes: A first touch electrode layer includes a plurality of first grid channels formed by the intersection of multiple first grid lines; each first grid channel includes two adjacent sub-grid channels and a first gap; the two sub-grid channels are spaced apart by the first gap, and one end of the two sub-grid channels on the same side is electrically connected; at least one of the sub-grid channels in the first touch electrode layer is provided with a plurality of grid reinforcement portions; A second touch electrode layer is provided, with an insulating layer stacked between the second touch electrode layer and the first touch electrode layer; the second touch electrode layer includes a plurality of second grid channels formed by the intersection of multiple second grid lines; the second touch electrode layer is provided with a plurality of grid gaps; The spatial projection positions of at least a portion of the missing mesh portion and at least a portion of the reinforced mesh portion correspond along the thickness direction of the first touch electrode layer.

2. The touch panel according to claim 1, characterized in that, The mesh reinforcement portion is disposed within the mesh of the first touch electrode layer, and the mesh reinforcement portion is connected to at least two sides of the mesh of the first touch electrode layer; The missing mesh portion is located on the mesh edge of the second touch electrode layer, and the missing mesh portion is a missing segment of the mesh edge.

3. The touch panel according to claim 2, characterized in that, The mesh reinforcement is disposed between two mesh edges that are opposite to or adjacent to each other in at least one mesh.

4. The touch panel according to claim 2, characterized in that, The missing part of the grid includes a first missing part and a second missing part, which are respectively disposed on two adjacent grid edges.

5. The touch panel according to claim 4, characterized in that, The second missing portion and the first missing portion are arranged collinearly or intersecting through a grid vertex of the second touch electrode layer.

6. The touch panel according to any one of claims 1 to 5, characterized in that, The missing mesh portions are at least located in the second mesh channel, and the missing mesh portions in the second mesh channel are staggered.

7. The touch panel according to claim 6, characterized in that, Multiple mesh missing portions are disposed in the second mesh channel; the area between adjacent second mesh channels is a virtual routing area; wherein, the mesh missing portions are also disposed in the virtual routing area, and the multiple mesh missing portions in the virtual routing area are staggered or continuous.

8. The touch panel according to any one of claims 1 to 5, characterized in that, The mesh reinforcement and the mesh missing parts are either overlapped or offset along the thickness direction.

9. The touch panel according to any one of claims 1 to 5, characterized in that, In the vertical direction of the longitudinal extension direction of the second grid channel, at most one grid missing part is provided on the grid edge in the same vertical direction.

10. An electromagnetic capacitive touch device, characterized in that, The device includes a processing component and a touch panel as described in any one of claims 1 to 9, wherein the processing component is electrically connected to a first grid channel of a first touch electrode layer and a second grid channel of a second touch electrode layer, respectively; wherein the first grid channel and the second grid channel are shared channels for electromagnetic touch and capacitive touch.

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